State profile · Near median Poor share

Illinois bridge safety

Condition ratings, load ratings, and Poor-condition data for every public highway bridge in Illinois, based on the FHWA National Bridge Inventory.

27,743
Public bridges
41.2%
Good condition
7.9%
Poor condition

Data updated May 2026

Total Bridges

27,743

Public highway bridges in Illinois

Good Condition

41.2%

11,426 bridges rated 7-9

-8.8pp vs 50% benchmark

Poor Condition

7.9%

2,186 bridges whose lowest applicable component is rated 0-4

0.9pp vs national avg 7.0%

Illinois vs national bridge condition

Illinois - Good condition share 41.2%
National avg

Share of bridges rated 7-9 on the FHWA 0-9 scale (deck, superstructure, substructure all good).

Illinois - Poor-condition share 26.3%
National avg

Lower is better. Bar maxes at 30% (worst-state ceiling). National average sits at 7.0%.

Condition Distribution

Illinois48.2%42.6%9.2%GoodFairPoor
Bridge inventory deck-condition mix - Illinois (FHWA NBI)

Counties (102)

Adams 325 Alexander 96 Bond 165 Boone 111 Brown 71 Bureau 382 Calhoun 81 Carroll 185 Cass 77 Champaign 743 Christian 323 Clark 232 Clay 171 Clinton 187 Coles 308 Cook 2185 Crawford 196 Cumberland 169 De Witt 197 DeKalb 264 Douglas 234 DuPage 380 Edgar 278 Edwards 79 Effingham 260 Fayette 356 Ford 300 Franklin 323 Fulton 210 Gallatin 82 Greene 166 Grundy 269 Hamilton 164 Hancock 291 Hardin 58 Henderson 144 Henry 331 Iroquois 565 Jackson 235 Jasper 180 Jefferson 270 Jersey 111 Jo Daviess 198 Johnson 120 Kane 354 Kankakee 352 Kendall 133 Knox 321 LaSalle 529 Lake 286 Lawrence 183 Lee 372 Livingston 578 Logan 296 Macon 368 Macoupin 248 Madison 543 Marion 301 Marshall 153 Mason 85 Massac 138 McDonough 210 McHenry 229 McLean 624 Menard 90 Mercer 162 Monroe 130 Montgomery 261 Morgan 241 Moultrie 171 Ogle 377 Peoria 365 Perry 139 Piatt 249 Pike 338 Pope 86 Pulaski 106 Putnam 50 Randolph 155 Richland 147 Rock Island 256 Saline 176 Sangamon 480 Schuyler 121 Scott 96 Shelby 330 St. Clair 502 Stark 89 Stephenson 332 Tazewell 361 Union 192 Vermilion 515 Wabash 88 Warren 202 Washington 232 Wayne 264 White 210 Whiteside 280 Will 674 Williamson 204 Winnebago 475 Woodford 222

Illinois vs nearby ranks

Adjacent states by Poor-condition share (lower share = better)

States are ranked by the share of bridges whose lowest applicable component rating is 4 or below. This describes recorded condition; it does not measure funding effectiveness or live crossing safety. States here sit immediately above and below Illinois on the same metric.

RI

Rhode Island

7.69% top marginal rate
Structure
Progressive
Burden @ $100K
$78

NE

Nebraska

7.73% top marginal rate
Structure
Progressive
Burden @ $100K
$15,571
Selected

IL

Illinois

7.88% top marginal rate
Structure
Progressive
Burden @ $100K
$27,743

MA

Massachusetts

7.96% top marginal rate
Structure
Progressive
Burden @ $100K
$5,314

MO

Missouri

8.53% top marginal rate
Structure
Progressive
Burden @ $100K
$24,654

Bridges Needing Most Attention in Illinois

Six lowest-condition bridges in Illinois, ranked by the portal's composite display score. Inspection intervals are risk-based under current NBIS rules.

FAS 1599

Poor

Over: DRAINAGE CANAL

2.2 MI E MEYER, Adams, IL

Built 1980 Load: 0.6 t ADT: 200

CH 15

Poor

Over: E FK MAZONRIVER

0.05 MI W CH 16, Grundy, IL

Built 1977 Load: 1.0 t ADT: 1,400

MOOSE RD - TR 240

Poor

Over: WILSON CREEK

NE-35-T3NR2E, Fulton, IL

Built 1935 Load: 1.3 t ADT: 10

TR 10-B

Poor

Over: KING CREEK

W EDGE OF MINERAL, Bureau, IL

Built 1899 Load: 1.6 t ADT: 10

TR-6

Poor

Over: DRAINAGE DITCH

3.5 MI NE DIETERICH, Effingham, IL

Built 1909 Load: 1.6 t ADT: 25

TR208K(TWIN BRIDGE

Poor

Over: BIG CREEK

NE EDGE MT ZION, Macon, IL

Built 1967 Load: 1.9 t ADT: 375

All Bridges in Illinois

PALMER ROAD

Poor

Over: SPRING CREEK

0.5 MI NE ALBANY, Whiteside, IL

Built 1978 Load: 29.2 t ADT: 100

FAS 357 CH2

Poor

Over: CROW CREEK

3.0 MI W MINONK, Woodford, IL

Built 1986 Load: 29.2 t ADT: 625

TOWNSHIP ROAD 74

Poor

Over: MASTERS CR.

4 MI. W. OF LAMOILLE, Bureau, IL

Built 1965 Load: 29.5 t ADT: 125

STATE ST

Poor

Over: MAIN BR CHICAGO RIV

309 N STATE, Cook, IL

Built 1949 Load: 29.5 t ADT: 6,900

GLIDDEN RD

Poor

Over: LEE SLOUGH CREEK

2955N 850E, DeKalb, IL

Built 1997 Load: 29.5 t ADT: 3,550

PRITCHARD RD

Poor

Over: W BR LITTLE ROCK CRE

1035N 1700E, DeKalb, IL

Built 1967 Load: 29.5 t ADT: 350

FAI 57 NBL

Poor

Over: BIG FOUR DITCH

2.37 MI S OF ILL 9, Ford, IL

Built 1968 Load: 29.5 t ADT: 10,550

AVE F (CANTON)

Poor

Over: BIG CREEK

SE-28-T7NR4E, Fulton, IL

Built 1976 Load: 29.5 t ADT: 800

SPRING RD TR-105

Poor

Over: JOHNNY RUN CREEK

.6 MI W HIGGINS RD, Grundy, IL

Built 1980 Load: 29.5 t ADT: 75

HADDEN RD TR-102

Poor

Over: JOHNNY RUN CREEK

.42 MI S MINE RD, Grundy, IL

Built 1975 Load: 29.5 t ADT: 75

OLD MAZON RD TR 12

Poor

Over: W FK MAZON RIVER

.4 MI S SUCKER ROAD, Grundy, IL

Built 1983 Load: 29.5 t ADT: 275

TR 115

Poor

Over: MURRAY SLUICE

3/4M S,3/4M E MAZON, Grundy, IL

Built 1996 Load: 29.5 t ADT: 275

US 52

Poor

Over: PIKE CREEK

0.24 MI E OF ILL 1, Iroquois, IL

Built 1928 Load: 29.5 t ADT: 1,700

CH-5

Poor

Over: BIRCH CREEK

3.5 MI NW PINKSTAFF, Lawrence, IL

Built 1979 Load: 29.5 t ADT: 100

CH11 PUMP FACTORY

Poor

Over: THREE MILE BRANCH

2.2 MI S OF DIXON, Lee, IL

Built 1960 Load: 29.5 t ADT: 250

OLD RT 66 NB/FAS 2

Poor

Over: WOLF CREEK

12.91 M S OF ILL 17, Livingston, IL

Built 1955 Load: 29.5 t ADT: 2,550

TR 199A

Poor

Over: LAKE FORK

4.5 E 1 MI S ELKHART, Logan, IL

Built 1978 Load: 29.5 t ADT: 225

TR 212

Poor

Over: LAKE FORK CK TRIB

1 E 1.5 MI S LAKE FK, Logan, IL

Built 1961 Load: 29.5 t ADT: 35

CH 21(FAS 546)

Poor

Over: WILLOW BRANCH

3.9 MI SW WARRENSBRG, Macon, IL

Built 1926 Load: 29.5 t ADT: 250

TR 292(FRIEND'S CR

Poor

Over: FRIENDS CREEK DITCH

IN FRIENDS CREEK, Macon, IL

Built 1980 Load: 29.5 t ADT: 200

TR 402

Poor

Over: SUGAR CR

.5 S. 3.5 W. VIRDEN, Macoupin, IL

Built 1900 Load: 29.5 t ADT: 100

SBI 36

Poor

Over: BLUE CREEK

1.3MI W DETROIT, Pike, IL

Built 1923 Load: 29.5 t ADT: 25

Road District 1

Poor

Over: Cooling Canal

3.5 MI N CORDOVA, Rock Island, IL

Built 1973 Load: 29.5 t ADT: 1,250

FAS 1632(CH 38)

Poor

Over: W BR LITTLE WABASH R

3.2 MI SE OF WINDSOR, Shelby, IL

Built 1916 Load: 29.5 t ADT: 375

I-55/64; US 40 PSC

Poor

Over: TRRA

P6(PSB) to Pier BC1, St. Clair, IL

Built 1966 Load: 29.5 t ADT: 117,700

HAURY ROAD

Poor

Over: OGLES CREEK

0.5MI W WEIL RD, St. Clair, IL

Built 1995 Load: 29.5 t ADT: 200

TR-149

Poor

Over: CROOKED CREEK

2 MI SW CROSSVILLE, White, IL

Built 1909 Load: 29.5 t ADT: 25

COLETA RD

Poor

Over: COUNTY DITCH NO. 1

2 MI. N. TAMPICO, Whiteside, IL

Built 1978 Load: 29.5 t ADT: 50

TR 2

Poor

Over: CLEAR CREEK SPUR

6 MI W PALMER, Christian, IL

Built 1986 Load: 29.8 t ADT: 50

ROHRSSEN RD

Poor

Over: POPLAR CREEK

0.3 M N ILL 19 P7, Cook, IL

Built 1958 Load: 29.8 t ADT: 3,200

CANAL STREET

Poor

Over: UNION STATION TRACKS

500 W & 0 N/S - 130S, Cook, IL

Built 1926 Load: 29.8 t ADT: 5,100

GOBLE ROAD

Poor

Over: BR OF INDIAN CREEK

455N 100E, DeKalb, IL

Built 1985 Load: 29.8 t ADT: 25

IL 53

Poor

Over: GREAT WESTERN TRAIL

0.8 M S OF IL 64, DuPage, IL

Built 1936 Load: 29.8 t ADT: 18,300

TR 155 GOODFARM RD

Poor

Over: TRIB E FK MAZON RIV

.42 MI E LINCOLN RD, Grundy, IL

Built 1987 Load: 29.8 t ADT: 50

CH 13-CHATAUQUA ST

Poor

Over: LITTLE CRAB ORCH CR

0.25M W EMARALD LANE, Jackson, IL

Built 1976 Load: 29.8 t ADT: 2,700

TR 13A

Poor

Over: BULL CREEK

6 M NE OF GRANT PARK, Kankakee, IL

Built 1978 Load: 29.8 t ADT: 275

TR 228

Poor

Over: TRIB TO SPOON RIVER

N.CTR-27-T10NR3E, Knox, IL

Built 1969 Load: 29.8 t ADT: 75

TR 341

Poor

Over: KICKAPOO CREEK

SE-14-T9NR4E, Knox, IL

Built 1974 Load: 29.8 t ADT: 50

ILL 170

Poor

Over: ILL MICH CANAL

0.42 MI S OF US 6, LaSalle, IL

Built 1940 Load: 29.8 t ADT: 5,550

FAS 343 CAMPUS RD

Poor

Over: BROUGHTON CREEK

3.7 M SO OF RTE 17, Livingston, IL

Built 1951 Load: 29.8 t ADT: 900

CHARLES RD

Poor

Over: Slough Creek

AT NELSON RD, McHenry, IL

Built 1947 Load: 29.8 t ADT: 6,300

VERNON AVENUE

Poor

Over: SUGAR CREEK N BRANCH

1.3 MI NNE 150 & 51, McLean, IL

Built 1968 Load: 29.8 t ADT: 8,650

ILL 40

Poor

Over: BNSF RR (004590M)

S EDGE OF EDELSTEIN, Peoria, IL

Built 1930 Load: 29.8 t ADT: 2,750

ILL 26/FAS 2370

Poor

Over: DRAINAGE DITCH

4.75 MI S OF ILL 71, Putnam, IL

Built 1956 Load: 29.8 t ADT: 800

I-55 (SB)

Poor

Over: ILLINOIS CENTRAL RR

1M N GLENARM INTCHG, Sangamon, IL

Built 1971 Load: 29.8 t ADT: 17,850

FAS 504(TR 501)

Poor

Over: GRAPE CREEK

2 MI E BELGIUM, Vermilion, IL

Built 1977 Load: 29.8 t ADT: 300

FAS 359 CH 4

Poor

Over: PANTHER CREEK

2.5 MI W PANOLA, Woodford, IL

Built 1980 Load: 29.8 t ADT: 400

TR 163

Poor

Over: HICKORY CREEK

1 MI SW OF MANLIUS, Bureau, IL

Built 1978 Load: 30.1 t ADT: 150

TR 267

Poor

Over: COAL CREEK

W EDGE OF SHEFFIELD, Bureau, IL

Built 1957 Load: 30.1 t ADT: 200

3RD ST (CH 30)

Poor

Over: OWL CREEK

VILLAGE OF FISHER, Champaign, IL

Built 1972 Load: 30.1 t ADT: 1,200

Showing 26,951-27,000 of 27,743 bridges

Related

All states → | National rankings → | Understanding conditions → | Retired SD term explained →
Data sourced from the FHWA National Bridge Inventory (NBI), latest released cycle. See our methodology for details. Retrieved and formatted by PlainBridges.

Disclaimer: This information is provided for informational purposes only and does not constitute professional advice. Data is sourced from the FHWA National Bridge Inventory (NBI). Poor condition is an inspection-record category, not a closure or unsafe-to-cross designation. Consult the bridge owner for current status.

Understanding Bridge Conditions

How FHWA rates bridge condition on a 0-9 scale.

Check Your Daily Bridges

How to look up bridge condition data for bridges on your route.

Read our methodology — how this data is sourced, computed, and verified.

Every figure on PlainBridge is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.